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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_FETCH_BODY_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_FETCH_BODY_H_
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_value.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/execution_context/execution_context_lifecycle_observer.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_typed_array.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class Blob;
class BodyStreamBuffer;
class DOMArrayBuffer;
class FormData;
class ExceptionState;
class ExecutionContext;
class ReadableStream;
class ScriptState;
// This class represents Body mix-in defined in the fetch spec
// https://fetch.spec.whatwg.org/#body-mixin.
//
// Note: This class has body stream and its predicate whereas in the current
// spec only Response has it and Request has a byte stream defined in the
// Encoding spec. The spec should be fixed shortly to be aligned with this
// implementation.
class CORE_EXPORT Body : public ExecutionContextClient {
public:
explicit Body(ExecutionContext*);
Body(const Body&) = delete;
Body& operator=(const Body&) = delete;
ScriptPromise<DOMArrayBuffer> arrayBuffer(ScriptState*, ExceptionState&);
ScriptPromise<Blob> blob(ScriptState*, ExceptionState&);
ScriptPromise<NotShared<DOMUint8Array>> bytes(ScriptState*, ExceptionState&);
ScriptPromise<FormData> formData(ScriptState*, ExceptionState&);
ScriptPromise<IDLAny> json(ScriptState*, ExceptionState&);
ScriptPromise<IDLUSVString> text(ScriptState*, ExceptionState&);
ReadableStream* body();
virtual BodyStreamBuffer* BodyBuffer() = 0;
virtual const BodyStreamBuffer* BodyBuffer() const = 0;
// This should only be called from the generated bindings. All other code
// should use IsBodyUsed() instead.
bool bodyUsed() const { return IsBodyUsed(); }
// True if the body has been read from.
virtual bool IsBodyUsed() const;
// True if the body is locked.
bool IsBodyLocked() const;
private:
// TODO(e_hakkinen): Fix |MimeType()| to always contain parameters and
// remove |ContentType()|.
virtual String ContentType() const = 0;
virtual String MimeType() const = 0;
// Body consumption algorithms will reject with a TypeError in a number of
// error conditions. This method wraps those up into one call which throws
// an exception if consumption cannot proceed. The caller must check
// |exception_state| on return.
void RejectInvalidConsumption(ExceptionState& exception_state) const;
// The parts of LoadAndConvertBody() that do not depend on the template
// parameters are split into this method to reduce binary size.
bool ShouldLoadBody(ScriptState*, ExceptionState&);
// Common implementation for body-reading accessors. To maximise performance
// at the cost of code size, this is templated on the types of the lambdas
// that are passed in.
template <class Consumer,
typename CreateLoaderFunction,
typename OnNoBodyFunction>
ScriptPromise<typename Consumer::ResolveType> LoadAndConvertBody(
ScriptState*,
CreateLoaderFunction,
OnNoBodyFunction,
ExceptionState&);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_FETCH_BODY_H_
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